Year	Index (Units)
1992	1309.958
1993	63334.923
1994	627768.338
1995	2992861.513
1996	5394047.462
1997	6250944.870
1998	6912117.432
1999	8480039.412
2000	10871673.130
2001	12171795.749
2002	12263987.489
2003	12902927.666
2004	14068871.020
2005	15971002.719
2006	17420464.785
2007	19657766.633
2008	24611788.741
2009	28524973.495
2010	31196306.171
2011	33678925.086
2012	33869340.554
2013	33780943.689
2014	37868272.905
2015	56303884.053
2016	64137482.214
2017	73401082.835
2018	81436069.322
2019	87857948.112
2020	90264859.779
2021	98714214.842
2022	118637447.352
2023	133883456.599
2024	142513782.427
2025	153314020.427
2026	162786208.688
2027	171296199.304
2028	179861604.793
2029	188854534.034
